Burner for gaseous fuels



' E. T. CURRAN.

BURNER FOR GASEOUS FUELS. APPLICATION FILED MAR.15, 1919.

1,337,824, Patented Apr. 20, 1920.

I IN

Hill]... a!!! mmvron E.T CURRAN HIS ORA/E) T 0 all whom it may concern:

EDWARD T. CURRAN, 013 DETROIT, MICHIGAN.

BURNER FOB. GASEOUS FUELS.

Specification of Letters Patent.

Patented Apr. 20, 1920.

Application filed March 15, 1919. Serial No. 282,872.

Be it known that I, EDWARD Detroit, Wayne county, and State of Michigan,have invented new and useful Improvevention to provide a burner having aplu-' rality of burner ports and each burner port provided with separateair intake means and arranged so that the pressure at which the fuel isfed to thejburner port orports will operate to cause the proper amountof air to be mixed or drawn to the combustible gas and thereby promotegood combustion.

It is a further object of the invention to provide in a gas burnerhaving multiple burner ports means whereby the gas supplyto one or moreof the burner'ports may-be shut off without reducing the pressure of theflow of gas to any one or more of the burner ports, and to also providemeans to simultaneously regulate the flow of gas to all of the burnerports.

It is another object of the invention-to provide valve mechanism wherebyto shut off the flowof gas to all of the bu'rnerswith the exception ofone burner and a restricted predetermined supply of gas delivered tosuch burner port to serve as a pilot light.

Other objects and advantages will herein after appear.

In the drawing accompanying and f0rming a part of this specification,Figure 1 is a side elevation of a burner partly broken away and partlyin section illustrating an embodiment of my invention.-

Fig. 2 is a plan view looking at the top of Fig. 1. s

Fig. 8 is a cross sectional viewof valve mechanism of controlling thegas supply to the burner and showing the manner of' supplying apredetermined and restricted supply of gas to one of the burnerports;*and,

Fig. 4 is a cross'se'ctional view of the main gas supply controllingvalve taken substan tiall'y'on the line l tof Fig. 1 looking-in thedirection of the arrow.

Similar characters of reference designate like parts through thedifferent views of the drawing.

In the embodiment of the invention shown T. CURRAN, a citizen of theUnited States, residing in;

in the drawing a central gas supply chamber 5 is connected to a sourceof gas supply by a pipe 6, and the gas supply to the chamber 5controlled by a valve 7 of a particular arrangement and construction tobe hereinafter described.

The chamber 5 has a burner port in a nozzle 8 (Fig. 2) in line with theaxis of said chamber, with gas passages 9, shown as four in number,extending laterally from said chamber, and each of said passages havinga nozzle 10 fitted thereto having a burner port to extend in a planeparallel with the port of the central nozzle 8 whereby said ports aregrouped about the central port.

A tube 11 engages over the nozzle 8 and is supported upon a seat formedat the base of the nozzle and extending above the nozzle. Similar tubes12 engage over each of the nozzles 10 and supported on seats at the baseof the nozzles, as shown at 13. The tubes 12 extend above the ports ofthe nozzles 8 and above the central tube 11 and are preferably of slihtly greater diameter than said tube 11. Faclrof the tubes 11 and 12 areprovided with ciroumferentially disposed openings 15, shown as three innumber, and located inline with the ends and outlet of orifices ,orports of the respective nozzles, and said nozzles preferably terminatein a planewith the axes of the openings 15. The gas supply through eachof the radial passages 9 to the ports of the respective nozzles 10 iscontrolled separately by individual valves 14L seated in valve seats inthe nozzle fittings, and are shown of the well known plug type andmaintained seated by springs 15 as is usual in this type of valve.

The gas supply to the main passageway or chamber 5 and thereby to thelateral passages 9 is controlled by the valve 7 seated in a valve seatin a coupling 16 for connecting the 'chamber 5 with the as supplythrough the pipe 6. This valve llas a plug 17 to rotatably engage in thecoupling 16 and retained therein by a headed screw 18 threaded into theend of the plug. To control the flow of gas from the pipe 6 to thechamber 5 the plug has a transverse slot 18 to permit of the flow of thegas from the pipe therethrough to a port 19 in the coupling leading intothe chamber 5, and by so adjusting the valve that the wall of the slotopposite said port 19 the flow of gas through the Valve slot and port 19to the chamber 5 will be shut oflt'.

As stated the central burner port is also adapted to serve as a pilotlight and may therefore be somewhatrestricted with rela tion to thenozzle ports 10. a To adapt the central port as a pilot light the plugof the valve 17 is provided with passages 20 a portion of which extendlongitudinally of the plug and another portion radiallvof the plug, saidpassages having inlets in communication with the plug slot 18 andoutlets 22 in the peripheral wall of the plug and which are adapted tobe placed successively in communication with a port 23 in the valvecasing leading to the chamber 5. By this arrangement a constant andrestricted supply of gas is furnished to the chamber 5 and from thelatter to the central burner port, and to supply a predetermined limitthough restricted supply to said chamber a series of ports 20 areprovided one or all of which may be placed in communication with therestricted port 23, and for which purpose a recess 24 is provided in thewall of the valve casing 16 in communication with the port 23 and inline with the outlets 22 of the ports 20. The outlets 22 are so arrangedthat as the flow of gas is shut off to the port 19 by the valve one ofthe outlets 22 will be placed in communication with the port 23 whichwill furnish a sufficient supply of gas to the burner port 8 to serve aspilot light. However, should it be desired to utilize the burner for aslow heating purpose or to maintain something in a warmed state thevalve is adjusted so that two or more of the outlets 22 of the ports 20are in communication with the port 23 through the recess 24:.

By the arrangement of the tubular chambers 11, 12 as the gas from therespective ports is injected into the portionsof the tubes above saidports such flow of the gas will induce a flow of air through the tubeopenings 15 to mix with the gas therein, and which liow of air will bein proportion with the flow of gas depending upon the force and rapidityof flow of gas.

Combustion of the combustible mixture of gas and air takes place at theupper ends of the tubes. By the combination and arrange ment of aseparate air supply for the respective burner ports of a gas burner Ihave been able to produce a multiple port gas burner in which the flowof gas from the individual ports is a goodcombustible mixture in whichthere is no softening as combustion takes place and consequent car bondesposits. Furthermore, by the prov sion of gas controlling means forthe individual burner ports I have been able to produce a greatflexibility in the control of the gas and thereby in the ,heat'cont'rolso much sought for. The burner is particularly adapted for use in whatare termed instantaneous heaters for water as well as for the generationof steam.

Having thus described my inventlon, I claim: 4 r

1, In a gas burner, a central port and a series of ports grouped aboutsaid central port, tubes to engage over and project above the ports withopenings adjacent the ports, a valve for each of said latter ports tocon trol the gas supply to such ports independently of each other, and avalveto control the gas supply to the central port and the ports groupedabout the same and adapt the central port as a pilot light.

2. In a gasburn-er, a central port with a series of ports groupedradially about said central port, and valves to shut off and control thegas supply to each of the radial burner ports, and a valve for the maingas supply arranged to deliver a constant predetermined limited supplyof gas to the cen-' tral burner port to adapt said burner port as apilot light when the gas is shut oil from the other burners;

3. In a gas burner, a main gas supply having a burner port in linetherewithwith passages extending laterally from the main supply and eachpassage having a port the axis of which is in a plane parallel with theport of the main supply,a tube'to engage over the port of the mainsupply and extend above said port, said tube having circumferentiallvdisposed openings in line with the port, and a tube to engage over eachof the ports of the latter, passages, to

extend above said'ports and the tube of the port of thevmain'supply',and having circumferentially disposed openings in line gith the burnerports for the purpose specied. "7

- 4. In a fgas burner', a main 'gas supply having a burner port in'linetherewith with passages extending radially from themain supply and eachpassage having a burner port tubes to engageover theburner ports havingcircumferentially disposed openings in line with the burner ports,valves toshut ofi' the gas supply to jeachfo'f the ports of the radialpassages one independently of the other, and a valveto control the maingas supply and to furnish a v constant limited supply of gas to saidport in line'therewith to adapt said port as a pilot light;

5. In a gas burner, a main gas supply spective burner ports havingcircumferen tially disposed openings in line with the 7 burner ports, avalve for each of the burner ports of the radial passagesto control thegas supply to said ports one independent of the other, and a valve forthe main gas supply arranged to permit of a constant predeterminedlimited supply of gas to the port in line with the main gas supplywhereby said port may serve as a pilot light.

6. In a gas burner, a main gas supply, a port in line therewith,passages radiating from the main supply having ports arranged to begrouped around the port in line with the main supply, a valve for eachof the radial passages to control the gas supply to the ports of saidpassages one independent of the other, and a valve to control the maingas supply and arranged to and means to regulate the restricted gas 25supply to the central port.

EDWVARD T. CURRAN.

